Question

What is used in the ceiling fan to reduce friction?



In one two line only plz fast​

Answer 1

Answer:

ball bearings

Since rolling friction is smaller than sliding friction , sliding is replaced in most machines by rolling by using ball bearings. Thus ball bearings are used between axle and the hub of a fan to reduce the friction force.

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Answer 2

Answer:

ball bearings reduce the friction

so ball bearings are used in the ceiling fans to reduce the friction